Recythonize the sources

python-pandas.spec

@@ -29,7 +29,9 @@ BuildRequires:  gcc-c++
 BuildRequires:  python2-devel
 BuildRequires:  python2-setuptools
 BuildRequires:  python2-matplotlib
+%if %{without python3}
 BuildRequires:  python2-Cython
+%endif
 Requires:       python2-pytz
 Requires:       python2-dateutil
 Requires:       python2-numpy
@@ -88,13 +90,16 @@ Python 3 version.
 %prep
 %autosetup -n %{srcname}-%{version}
 
-%build
-%py2_build
+rm $(grep -rl '/\* Generated by Cython')
 
+%build
 %if 0%{?with_python3}
 %py3_build
 %endif # with_python3
 
+%py2_build
+
+
 %install
 %py2_install